BM2P129TF-E2

Overview

The BM2P129TF-E2 is a PWM DC/DC converter IC with an integrated switching MOSFET designed for non-isolated AC/DC applications. It operates within an input voltage range of 8 V to 12.97 V and features a fixed switching frequency of 100 kHz. The device utilizes current mode control for superior bandwidth and transient response, incorporating per-cycle current limiting. Key electrical specifications include a maximum drain voltage of 650 V, a typical on-resistor of 9.5 Ω, and a supply current of 850 uA. It supports operation from -40°C to +105°C in an SOP-8 package.

Feature Summary

• Integrates a high-voltage super junction MOSFET with built-in start circuitry to facilitate low-power design.
• Employs current mode control with per-cycle current limiting to ensure stable performance under varying loads.
• Features automatic frequency reduction during light load conditions to maintain high efficiency.
• Includes built-in skip frequency functionality to assist in achieving lower electromagnetic interference levels.

Applications

• Non-isolated high-efficiency power converters
• AC/DC conversion systems for consumer electronics
• Power supplies for appliances with socket connections

Procurement Notes

Verify the specific suffix E2 against official ROHM documentation to confirm pinout and thermal characteristics. Ensure the SOP-8 package dimensions match your PCB footprint requirements. Confirm that the 650V drain rating aligns with your circuit's peak voltage stresses. Check for any regional compliance certifications required for your target market before finalizing procurement.

Selection Notes

Select this component when designing non-isolated converters requiring integrated high-voltage switching capabilities. It is suitable for applications needing fixed 100 kHz operation and efficient light-load management. Consider the 9.5 Ω on-resistance for thermal planning. This IC is not recommended for automotive equipment; verify industrial or commercial suitability for your specific use case.

Part Context

This part belongs to the BM2P series of PWM type DC/DC converter ICs manufactured by ROHM Semiconductor. These devices are engineered to provide excellent system performance for all socket-connected products. The series focuses on enabling easy design of non-insulated high-efficiency converters through integrated components and robust protection circuits.

Replacement Considerations

BM2P129TF is listed as an alias for this component. Verify functional equivalence and package compatibility before substitution. No other direct substitutes are confirmed in public data.